2011 RENAULT SCENIC air condition

13B-74
MR-372-J84-13B200$288.mif
V13
13B
DIESEL INJECTION
Fault finding – Interpretation of faults
DF047
PRESENT
OR
STOREDCOMPUTER FEED VOLTAGE
1.DEF: Voltage outside permitted range of values
NOTESConditions for applying the fault finding procedure to stored faults:
The fault is declared present after several starting attempts, or with the engine
running.
Special notes:
Computer operating voltage: 9 V < PR071 < 16 V.
Battery voltage that is too low can cause the level 1 fault warning light to come on
thereby causing other faults to appear.
Use bornier Elé.1681 or Elé.1590 for any operation on the injection computer
connectors.
Check the continuity and absence of interference resistance of the following connections:
– connection code AP15 between components 120 and 1337 (Scénic II et Mégane II).
– connection code AP29 between components 120 and 597 (Laguna II).
If the connection or connections are faulty and there is a repair method (see Technical Note 6015A, Repairing
electrical wiring, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
Check the condition of the injection control unit supply relay (50A) located on a relay plate in the engine
compartment connection unit (no false contact or oxidation on the relay mounting clips).
Repair if necessary.
If the fault does not reappear, start the engine and wait 1 minute.
Carry out a road test and check the system faults.
If there are no faults, fault finding is complete.
If the fault is still present, contact the Techline.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V50_DF047/EDC16_V58_DF047/EDC16_V5C_DF047/EDC16_V18_DF047EDC16
Program No.: C1
Vdiag No.: 18, 50,
58, 5C

13B-75
MR-372-J84-13B200$288.mif
V13
13B
DIESEL INJECTION
Fault finding – Interpretation of faults
DF049
PRESENT
OR
STOREDREFRIGERANT SENSOR CIRCUIT
CC.1:Short circuit to + 12 V
CO.0: Open circuit or short circuit to earth
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault is declared present following a road test, or if the air conditioning is switched
on.
Special notes:
If the fault is present, air conditioning is not authorised.
Use bornier Elé.1681 or Elé.1590 for any operation on the injection computer
connectors.
CC.1
NOTESNone
Check the refrigerant pressure sensor connectors.
Check the injection computer connections.
Repair if necessary.
Check that the configuration reading LC009 Air conditioning is WITH.
If LC009 Air conditioning is WITHOUT, run command RZ005 Programming to reinitialise the vehicle
configurations.
If necessary, operate the air conditioning to reconfigure the computer to WITH.
Connect an air conditioning filling station (equipped with a high pressure gauge) to the vehicle.
Display parameter PR037 Refrigerant pressure and compare the value displayed by the filling station.
If the values match, run fault finding on the air conditioning (see 62A, Air conditioning).
If the values do not match, check the continuity and insulation against + 12 V of the following connections:
– connection code 38X,
– connection code 38Y,
– connection code 38U.
between components 120 and 1202.
If the connection or connections are faulty and there is a repair method (see Technical Note 6015A, Repairing
electrical wiring, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
If the fault is still present, replace the refrigerant pressure sensor (see MR 364 (Mégane II) or 370 (Scénic II)
or 395 (Laguna II), Mechanical, Air conditioning, 62A, Air conditioning, Pressure sensor: Removal –
Refitting).
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V50_DF049/EDC16_V58_DF049/EDC16_V5C_DF049EDC16
Program No.: C1
Vdiag No.: 50, 58, 5C

13B-76
MR-372-J84-13B200$288.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of faults
EDC16
Program No.: C1
Vdiag No.: 50, 58, 5C
13B
DF049
CONTINUED
CO.0
NOTESNone
Check the refrigerant pressure sensor connectors.
Check the injection computer connections.
Repair if necessary.
Check that the configuration reading LC009 Air conditioning is WITH.
If LC009 Air conditioning is WITHOUT, run command RZ005 Programming to reinitialise the vehicle
configurations.
If necessary, operate the air conditioning to reconfigure the computer to WITH.
Connect an air conditioning filling station (equipped with a high pressure gauge) to the vehicle.
Display parameter PR037 Refrigerant pressure and compare the value displayed by the filling station.
If the values match, run fault finding on the air conditioning (see 62A, Air conditioning).
If the values do not match, check the continuity and insulation against earth of the following connections:
– connection code 38X,
– connection code 38Y,
between components 120 and 1202.
If the connection or connections are faulty and there is a repair method (see Technical Note 6015A, Repairing
electrical wiring, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
If the fault is still present, replace the refrigerant pressure sensor (see MR 364 (Mégane II) or 370 (Scénic II) or
395 (Laguna II), Mechanical, Air conditioning, 62A, Air conditioning, Pressure sensor: Removal –
Refitting).
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.

13B-77
MR-372-J84-13B200$288.mif
V13
13B
DIESEL INJECTION
Fault finding – Interpretation of faults
DF050
PRESENT
OR
STOREDBRAKE SWITCH CIRCUIT
1.DEF: Open circuit or short circuit
2.DEF : Inconsistent signal
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault is declared present after the brake pedal is depressed, or during a road test.
Special notes:
If the fault is present, the cruise control/speed limiter is deactivated.
Use bornier Elé.1681 or Elé.1590 for any operation on the injection computer
connectors.
WARNING
This fault may appear if the wiring harness has been damaged.
Follow the procedure described in the Wiring Check in the Introduction.
This check enables the condition and the conformity of the engine wiring harness to be checked.
1. DEF
NOTESNone
Check the brake pedal switch connections.
Check the condition and adjustment of the brake pedal switch.
Repair if necessary.
Check the conformity of the brake light switch:
For Mégane II and Scénic II without ESP:
Brake pedal released:
– continuity between connections 5A and BPT,
– infinite resistance between connections 65A and SP17.
Brake pedal depressed:
– infinite resistance between connections 5A and BPT,
– continuity between the connections 65A and SP17.
For Mégane II and Scénic II with ESP:
Brake pedal released:
– continuity between connections 5A and BPT,
– infinite resistance between connections 65G and SP17.
Brake pedal depressed:
– infinite resistance between connections 5A and BPT,
– continuity between the connections 65G and SP17.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V50_DF050/EDC16_V58_DF050/EDC16_V5C_DF050/EDC16_V18_DF050/EDC16_V1C_DF050/EDC16_V20_DF050EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C

13B-78
MR-372-J84-13B200$288.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of faults
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
13B
DF050
CONTINUED
For Laguna II:
Brake pedal released
– continuity between connections 5A and SP13,
– infinite resistance between connections 65A and SP17.
Brake pedal depressed
– infinite resistance between connections 5A and SP13,
– continuity between connections 65A and AP10.
Replace the switch if necessary.
Check the condition of fuse H 15A on the passenger compartment fuse and relay board.
Replace the fuse if necessary.
Check the supplies to the switch:
For Mégane II and Scénic II:
+ 12 V after ignition Connection SP17 of component 160
+ 12 V battery Connection BPT of component 160 (via ABS)
For Laguna II:
+ 12 V after ignition Connection SP13 of component 160
+ 12 V battery Connection AP10 of component 160
Check the continuity and insulation of connection 5A between components 120 and 160.
If the connection or connections are faulty and there is a repair method (see Technical Note 6015A, Repairing
electrical wiring, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
2.DEF
NOTESNone
Check the brake pedal switch connections.
Check the condition and adjustment of the brake pedal switch.
Repair if necessary.
Check the continuity and absence of interference resistance on connection 5A between components 120
and160.
If the connection or connections are faulty and there is a repair method (see Technical Note 6015A, Repairing
electrical wiring, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
Check the conformity of the switch by consulting the interpretation of statuses ET704 Brake switch no. 1 and
ET705 Brake switch no. 2.
If the fault is still present, run fault finding on the ABS computer (see 38C, Anti-lock braking system).
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.

13B-79
MR-372-J84-13B200$288.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of faults
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
13B
DF051
PRESENT
OR
STOREDCRUISE CONTROL/SPEED LIMITER FUNCTION
1.DEF: Inconsistent signal
2.DEF: Inconsistent vehicle speed
3.DEF: Steering wheel controls
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault is declared present after the engine is started or following a road test.
Special notes:
The cruise control/speed limiter function is inhibited.
Use bornier Elé.1681 or Elé.1590 for any operation on the injection computer
connectors.
WARNING
This fault may appear if the wiring harness has been damaged.
Follow the procedure described in the Wiring Check in the Introduction.
This check enables the condition and the conformity of the engine wiring harness to be checked.
If the fault is present, refer to the interpretation of the following statuses:
– ET042 Cruise control/speed limiter.
– ET415 Deactivation of cruise control/speed limiter.
Check that by pressing the buttons the statuses change and that, with the ignition switched on, all the values are
correct.
If the fault is still present, contact the Techline.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V50_DF051/EDC16_V58_DF051/EDC16_V5C_DF051/EDC16_V18_DF051/EDC16_V1C_DF051/EDC16_V20_DF051

13B-80
MR-372-J84-13B200$288.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of faults
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
13B
DF053
PRESENT
OR
STORED
RAIL PRESSURE REGULATION FUNCTION
CC.1: Short circuit to + 12 V
CC.0: Short circuit to earth
CO: Open circuit
1.DEF: Internal electronic fault
2.DEF: Pressure measured too low
3.DEF: Pressure measured too high
4.DEF: Insufficient pressure
5.DEF: Pressure < minimum
6.DEF: Pressure > maximum
7.DEF: Significant pump control
8.DEF: Above maximum threshold
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault is declared present after:
– the engine is started,
– a road test,
– an actuator command AC011 Rail pressure regulator.
Special notes:
If the fault is present:
– it is not possible to start the engine,
– engine stops if already started,
–if 3.DEF is present, the level 1 warning light is lit,
– if one of the other faults is present, the level 2 warning light is lit.
Use bornier Elé.1681 or Elé.1590 for any operation on the injection computer
connectors.
CC.1
NOTESNone
Check the rail pressure regulator connectors.
Check the injection computer connections.
Check the low pressure circuit by running test 3 Low pressure circuit check.
Check the conformity of the fuel used by running test 11 Diesel fuel conformity check.
Check the overpressure valve, run test 12 Incorrect operation of the overpressure valve,
Check the operation of the injectors, run test 9 Incorrect injector operation.
Repair if necessary.
Measure the resistance of the rail pressure regulator between connections 3HI and 3FB (Mégane II and
Laguna II) or 3FB1 (Scénic II).
Replace the injection pump if its resistance is not 3 ohms ± 1 at 20°C.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V50_DF053/EDC16_V58_DF053/EDC16_V5C_DF053/EDC16_V18_DF053/EDC16_V1C_DF053/EDC16_V20_DF053

13B-84
MR-372-J84-13B200$288.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of faults
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
13B
DF053
CONTINUED 4
2.DEF A
8.DEF
NOTESNone
Check the rail pressure regulator connectors.
Check the injection computer connections.
Check the low pressure circuit by running test 3 Low pressure circuit check.
Check the conformity of the fuel used by running test 11 Diesel fuel conformity check.
Check the overpressure valve, run test 12 Incorrect operation of the overpressure valve.
Repair if necessary.
Measure the resistance of the pressure regulator between connections 3FB (Mégane II and Laguna II) or 3FB1
(Scénic II) and 3HI.
Replace the injection pump if its resistance is not 3 ohms ± 1 Ω at 20°C.
Check the continuity and absence of interference resistance on the following connections:
– connection code 3HI between components 120 and 1105,
– connection code 3FB (Mégane II and Laguna II) or 3FB1 (Scénic II) between components 1105 and 983
(Laguna II) or 1337 (Mégane II and Scénic II).
If the connection or connections are faulty and there is a repair method (see Technical Note 6015A, Repairing
electrical wiring, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
In the event of rail overpressure:
Check the operation of the injectors by running test 9 Poor injector operation.
Check that the rail pressure sensor is operating correctly using command AC011 Rail pressure regulator. Check
the conformity of parameter PR038 Rail pressure.
If these checks do not reveal any faults, and if the fault is still present, replace the rail pressure regulator.
in the event of rail underpressure:
Check that the rail pressure sensor is operating correctly using command AC011 Rail pressure regulator. Check
the conformity of parameter PR038 Rail pressure.
Check the low pressure diesel circuit priming.
Check the conformity of the diesel filter connections.
Check the condition of the filter (clogging and water saturation).
Check that there are no air bubbles between the filter and the high pressure pump.
Check the low and high pressure diesel fuel circuit sealing (visual inspections, etc.) pump housing, pressure relief
valve, pipes, rail and injector unions, injector wells, etc.
Check the conformity of the seal fitting on the pressure regulator.
Check the operation of the injectors by running test 9 Poor injector operation.
Carry out the necessary operations.
If the fault is still present replace the rail pressure regulator.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.